Hi Gray;

You need more chlorine -- everything else is OK.

But you need to use the "Best Guess" chart to determine your shock level (20 ppm or more) and use bleach to reach that . . . OR you need to drain 2/3 and refill. There is some risk of having your liner fade with that dose of chlorine -- it shouldn't but some liners, are pretty chlorine sensitive. It won't actually hurt the liner, just the color and/or print.

Also, you need to get a leaf net, if there is goop on the bottom, and scoop it out. You can't clean that sort of stuff up with any amount of chlorine you'd want to use.

And, you need to make sure your filter is working and your pump is running 24/7. If in doubt, add some sand. Most AG pool sand filters are too small for the pumps they are mated with, with the result that you lose sand on every backwash.

Ben